{
  "abstract": "Information causality (IC) was introduced as a physical principle constraining correlations in non-signaling theories. Whether it can recover the exact quantum correlation boundary, beyond Uffink's inequality, has remained an open question. Here, we combine its generalized formulation for correlated inputs with a new communication protocol to derive quantum Bell inequalities that exactly characterize the quantum correlations in the simplest bipartite Bell scenario, with two binary measurements. In particular, we derive the Tsirelson-Landau-Masanes criterion directly from IC. Thus, the generalized IC implies macroscopic locality, while we also present macroscopically local correlations that violate the generalized IC. This establishes that generalized IC is a strictly stronger principle in this scenario. Together with our earlier result that generalized IC implies a nontrivial communication complexity principle, these findings strengthen the role of information causality in explaining the limits of quantum nonlocality and provide a systematic route to deriving tighter bounds on the set of quantum correlations in more general Bell scenarios.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.10508",
  "author_total": 2,
  "authors": [
    {
      "name": "Mariami Gachechiladze"
    },
    {
      "name": "Nikolai Miklin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2p6kr6qm5mwbb.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.10508",
  "fulltext_url": null,
  "id": "2p6kr6qm5mwbb",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.10508",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "3107|Quantum Mechanics and Applications"
    ]
  ],
  "openalex": "W7212187613",
  "pdf_url": "https://arxiv.org/pdf/2609.10508",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-09",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2p6kr6qm5mwbb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:12Z",
      "native_id": "2609.10508",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.10508"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Information Causality Characterizes the Set of Quantum Correlations in the Simplest Bell Scenario",
  "title_text": "Information Causality Characterizes the Set of Quantum Correlations in the Simplest Bell Scenario",
  "type": "preprint",
  "updated_at": "2026-10-30T12:20:12Z",
  "url": "https://research.draconitic.com/paper/2p6kr6qm5mwbb",
  "venue": "arXiv",
  "versions": []
}